#include<iom128v.h>
#include"key4x4.h"
#define uchar unsigned char 
#define uint unsigned int 

//4x4鍵盤，鍵值用LED顯示
//主函數(shù)
main()
{
uchar key;
DDRA=0xff;
DDRC=0xff;
PORTA=0xff;
while(1)
     {
	 key=key_value(); //讀取4x4鍵盤
	 if(key!=0)       //有按鍵被按下
	   {
	   PORTA=~key;    //顯示鍵值
	   }
	 }

}